A176702 Triangle T(n,k) read by rows. A051731(n,k)-A051731(n,k+1).

1, 0, 1, 1, -1, 1, 0, 1, -1, 1, 1, 0, 0, -1, 1, 0, 0, 1, 0, -1, 1, 1, 0, 0, 0, 0, -1, 1, 0, 1, -1, 1, 0, 0, -1, 1, 1, -1, 1, 0, 0, 0, 0, -1, 1, 0, 1, 0, -1, 1, 0, 0, 0, -1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 1, -1, 1, 0, 0, 0, 0, -1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 1, 0, 0, 0, -1

Offset

1,1

Comments

Matrix inverse of A134541.

The subsequence of A180430 beginning from the second column, divided by 2, equals this sequence. [From Mats Granvik, Sep 04 2010]

Links

Table of n, a(n) for n=1..97.

Example

Triangle begins:
1
0...1
1..-1...1
0...1..-1...1
1...0...0..-1...1
0...0...1...0..-1...1
1...0...0...0...0..-1...1
0...1..-1...1...0...0..-1...1
1..-1...1...0...0...0...0..-1...1
0...1...0..-1...1...0...0...0..-1...1
1...0...0...0...0...0...0...0...0..-1...1
0...0...0...1..-1...1...0...0...0...0..-1...1

Crossrefs

Cf. A176702*A000012=A051731. Row sums equals A000012.

Sequence in context: A285430 A284368 A287725 * A188038 A275694 A267922

Adjacent sequences: A176699 A176700 A176701 * A176703 A176704 A176705

Keyword

sign,tabl

Author

Mats Granvik, Gary W. Adamson, Apr 24 2010

Status

approved